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Effect of 43 Foreign and Domestic Cotton Cultivars and Strains on Growth of Tobacco Budworm Larvae¹

Weights were determined for tobacco budworm, Heliothis virescens F., larvae grown from hatching to 5 days of age on excised terminal leaves from a selected set of 35 foreign and eight 8 USA cotton, Gossypium hirsutum L., cultivars and strains. These data supplement previously published information from our laboratory for these cultivars and strains on resistance to three other insect pests and on agronomic, fiber property, morphological, and disease resistance measurements from Oklahoma. Larvae reared on ‘BJA 592’, ‘Laxmi’, ‘SATU 65’, MO-HG, and HG-BR-8-N were significantly (P = 0.5) smaller than those on ‘Deltapine 16’. Larvae reared on Laxmi were also significantly smaller than those on ‘Stoneville 213’.

Key Words: Lepidoptera • Noctuidae • Heliothis virescens F. • Gossypiura hirsutura L. • Antlbiosis

² Former graduate research assistant, Entomology Dep., Mississippi State, Univ. (now research entomologist, ARS, USDA, Delta States Res. Center, Stoneville, MS 38776).

³ Research geneticist, research entomologist, and research agronomist, respectively, ARS, USDA, Crop Sci. and Eng. Res. Lab., Mississippi State, MS 39762.

Received for publication May 18, 1981.